Noise Control in the Bay Area Rapid Transit System: Interim Report |
Contents
Noise from Railed Vehicles Traveling in Subways | 27 |
VI | 33 |
Parapets and Tunnels | 49 |
6 other sections not shown
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Common terms and phrases
absorb sound ABSORPTION COEFFICIENT absorptive material ac power accelerometer acoustic concrete acoustic data acoustic parapets Acoustical Design acoustical material acoustical treatment aerial structures applied asbestos barrier BART System Beranek brakes calculated car body cavity resonator coach components configuration constrained damping crossover rail curves damping material damping treatment decibels deflection effectiveness elastic elastomer excitation experimental frequency gear glass fiber Harris installed layer load loudness maximum mode motion motor noise and vibration noise level noise measurements noise reduction noise sources octave band over-all sound panels perforated phons porous power distribution system rail pads rapid transit car rapid transit system resilient resonant absorbers roadbed shear shields slope sound absorption sound level sound pressure level source of noise spectra spectrum speech interference speed stick-slip subway surface test track thick train transmission path transverse truck tunnel unsprung weight upper load Vehicle vertical compliance vibration reduction walls wheel